Book Series on Complex Metallic Alloys

10.1142/bscma ◽  
2017 ◽  
Keyword(s):  
Metallic Alloys ◽  
Book Series ◽  
Complex Metallic Alloys

Complex Metallic Alloys for Applications in Magnetic Refrigeration

2015 ◽  
Vol 8 (2) ◽  
pp. 129-154
Author(s):  
Benjamin Podmiljsak ◽  
Paul J. McGuiness ◽  
Spomenka Kobe
Keyword(s):  
Magnetic Refrigeration ◽  
Metallic Alloys ◽  
Complex Metallic Alloys

High temperature oxidation of AlCrFe complex metallic alloys

2014 ◽  
Vol 89 ◽  
pp. 118-126 ◽  
Author(s):  
N. Prud’homme ◽  
P. Ribot ◽  
M. Herinx ◽  
P. Gille ◽  
B. Bauer ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Metallic Alloys ◽  
Temperature Oxidation ◽  
Complex Metallic Alloys

METADISLOCATIONS IN COMPLEX METALLIC ALLOYS

2010 ◽  
pp. 161-190
Author(s):  
Marc Heggen ◽  
Mick Feuerbacher
Keyword(s):  
Metallic Alloys ◽  
Complex Metallic Alloys

Atomic Dynamics in Complex Metallic Alloys

2013 ◽  
Vol 1517 ◽  
Author(s):  
Holger Euchner ◽  
Stephane Pailhès ◽  
Tsunetomo Yamada ◽  
Ryuji Tamura ◽  
Tsutomu Ishimasa ◽  
...  
Keyword(s):  
Lattice Dynamics ◽  
Structural Complexity ◽  
Building Blocks ◽  
Metallic Alloys ◽  
Strong Reduction ◽  
Large Numbers ◽  
Unit Cells ◽  
Dynamics Simulations ◽  
The Impact ◽  
Complex Metallic Alloys

ABSTRACTComplex Metallic Alloys (CMAs) are metallic solids of high structural complexity, consisting of large numbers of atoms in their unit cells. Consequences of this structural complexity are manifold and give rise to a variety of exciting physical properties. The impact that such structural complexity may have on the lattice dynamics will be discussed. The surprising dynamical flexibility of Tsai-type clusters with the symmetry breaking central tetrahedron will be addressed for Zn6Sc, while in the Ba-Ge-Ni clathrate system the dynamics of encaged Ba guest atoms in the surrounding Ge-Ni host framework is analysed with respect to the experimentally evidenced strong reduction of lattice thermal conductivity. For both systems experimental results from neutron scattering are analyzed and interpreted on atomistic scale by means of ab initio and molecular dynamics simulations, resulting in a picture with the respective structural building blocks as the origin of the peculiarities in the dynamics.

scholarly journals Structure analysis of complex metallic alloys in the Eu-Ag-In system by X-ray diffraction

2009 ◽  
Vol 165 ◽  
pp. 012045 ◽  
Author(s):  
Cesar Pay Gómez ◽  
Yoshiki Morita ◽  
Akiji Yamamoto ◽  
An Pang Tsai
Keyword(s):  
Structure Analysis ◽  
Metallic Alloys ◽  
X Ray Diffraction ◽  
X Ray ◽  
Complex Metallic Alloys ◽  
The Eu

scholarly journals Lattice dynamics and macroscopic properties in complex metallic alloys

2014 ◽  
Vol 70 (a1) ◽  
pp. C399-C399
Author(s):  
Pierre-François Lory ◽  
Marc de Boissieu ◽  
Peter Gille ◽  
Mark Johnson ◽  
Marek Mihalkovic ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Lattice Dynamics ◽  
Disordered Systems ◽  
Inelastic Neutron Scattering ◽  
Building Blocks ◽  
Metallic Alloys ◽  
Experimental Investigations ◽  
Icosahedral Symmetry ◽  
Macroscopic Properties ◽  
Complex Metallic Alloys

Complex metallic alloys are long-range ordered materials, characterized by large unit cells, comprising several tens to thousands of atoms [1]. These complex alloys often consist of characteristic, cluster building blocks, which in many cases show icosahedral symmetry. Numerous complex phases are known, that can be described in a rather simple way as the periodic or quasi-periodic packing of such atomic clusters. The lattice dynamics of CMAs has been the subject of both theoretical and experimental investigations in view of their interesting macroscopic properties such as low thermal conductivity. In aperiodic crystals in the higher wave-vector regime, theory predicts that the lattice modes are critical: they are neither extended as in simple crystals nor localized as in disordered systems [2]. Experimentally phonons have been studied in different CMAs systems like clathrates, approximant-crystals and quasicrystals. For all of them, acoustic modes are well-defined for wave-vectors close to Brillouin zone centres, but then broaden rapidly as the result of coupling with other excitations [3]. We will present a combined experimental and atomistic simulation study of the lattice dynamics of the complex metallic alloy Al13Co4 phase [4], which is a periodic approximant of the decagonal phase. Particular attention will be paid to the differences between the periodic and `quasiperiodic' directions. Inelastic neutron scattering measurements carried out on a large, single grain on a triple-axis spectrometer will be compared to simulations, focussing on the dispersion relations and the intensity distribution of the S(Q,ω) scattering function, which is a very sensitive test of the model [3]. Simulations are performed with DFT methods and empirical, oscillating, pair potentials [5]. In addition, thermal conductivity calculations, based on the Green-Kubo method, will be compared with measurements, which show a weak anisotropy [6-7]. In this way, the structure-dynamics-properties relation for CMAs is thoroughly explored.

Assessment of the surface state behaviour of Al71Cu10Fe9Cr10 and Al3Mg2 complex metallic alloys in sliding contacts

2009 ◽  
Vol 17 (11) ◽  
pp. 930-937 ◽  
Author(s):  
N. Diomidis ◽  
N. Göçkan ◽  
P. Ponthiaux ◽  
F. Wenger ◽  
J.-P. Celis
Keyword(s):  
Surface State ◽  
Metallic Alloys ◽  
Sliding Contacts ◽  
State Behaviour ◽  
Complex Metallic Alloys

scholarly journals Anomalous electronic transport in quasicrystals and related complex metallic alloys

2014 ◽  
Vol 15 (1) ◽  
pp. 70-81 ◽  
Author(s):  
Guy Trambly de Laissardière ◽  
Didier Mayou
Keyword(s):  
Electronic Transport ◽  
Metallic Alloys ◽  
Complex Metallic Alloys ◽  
Related Complex
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